We (Thomas Göttlicher, J. Daniel Schmidt and Arvin Schnell) have use all our remaining ITO for this really cool feature.
Normally compiz (more precisely the cube module) shows each desktop on the surface of a cuboid. Since we don’t have several desktops during installation we decided to show the “wizard” steps on the cuboid. Pressing “Next” or “Back” rotates the cuboid around the y-axis:
rest here